The impact of multi-level interventions on the second-wave SARS-CoV-2 transmission in China
Fig 3
The scatter plots and fitted regression lines of Rt estimations in five worst-hit cities in China.
The “red” lines represent the cities with “Strong” level NPIs, the “blue” lines represent the cities without “Strong” level NPIs. The equations of linear regression (top right) were fitted from the Rt values from the start of calculation to the first day of Rt < 1 in each city. The P value below the equations were the p-value for the hypothesis test based on the analysis of covariance (ANCOVA) evaluating whether the decline in transmission rate was different across cities. Rt = time-varying reproduction number.